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Theequationoflinetis

y
=
–7
9
x
+ 7
. Line
uisperpendicularto
t . What
istheslopeofline
u ?

Simplify your answer and write it as a proper fraction, improper fraction, or integer.

1 answer

The slope of a line perpendicular to a line with slope m is -1/m.

Therefore, the slope of line u is -1/(-7/9) = 9/7 or 1 2/7.
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